Tar-dehydrater.



.110,786,821 PATBNTBD A1211.' 11,1905.

' 11A. MOORE."

TAR DEHYDRATER.v APPLIOAT-IONl FLED MAY 5.119035'.

5 SHEETS-Smm 1.

f .1 III. l l l I I I I I I l I] lill- WJI.

, i PATENTBD A111. 11; 1905.' E. A. MOORE. 1 TAR DEHYDRATER-1 AfPLIATIONAFILED .MAY 5, 1903.

5 SHEETS-SHEET 2.

Patented April '11, 1 905.

'UNITED STATES PATENT OFFICE.

EDWIN A. MOORE, OFV PHILADELPHIA, PENNSYLVANIA.

-TAR-..DEHYDRATER.

SPECIFICATION forming part of Letters Patent No. 786,828, dated .April11, 1905. Application filed May 5,1903. Serial No. 155,721.

T all whom vt may concern):

' Be it known that I, EDWIN A. MOORE, a citizen of the United States,residing atPhiladelphia, in the county of Philadelphia and State ofPennsylvania, have invented certain new and useful Improvements inTar-Dehydraters; and I do hereby declare the following to be a full,clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertainsto make and use thesame.

My invention relates to the dehydration of tar derived from gas evolvedfrom the distil-A lation of coal, and has for its'object the separationof the water from tar and the arresting of the distillates liberated inthe treatment of the tar; and the'invention consists in certainimprovements, which will be fully disclosed in the followingspecification and claim.

In the accompanying drawings, which form part of this specification,Figures 1 and 1a represent a top plan view of my improved tardehydraterwith a section removedA from the center; Figs. 2 and 2, a verticallongitudinalV section of the same, the supply and discharge valves, thetubular arms, and the pipe 40 being shown in side elevation; Fig. 3, anelevation of the discharge end of the device, and Fig. 4 a verticaltransverse section on line 4 4, Fig. 2.

Reference being had to the drawings and the designating charactersthereon, the nu-` meral 1 indicates the tar-receptacle of the device,preferably made of boiler-iron, at each end of which is a right-angledflangedring 2, to one of whichiianges is secured an. extension 3 and tothe other an extension 4, both of which are of cast-iron, the extension3 being provided with a tar-supplypipe 5. To the extension 3 is secureda head 6, provided with an inwardly-extending bearing 7, a stuffingbox 8on the outside of the head, and a gland 9 for the adjustment of thepacking by means ofthe bolts 10 andnuts l1, which engage the flanges onthe stuffing-box and on the gland. rIo the extension 4 is. secured ahead l2, provided with alike inwardly-extending bearing 13, astuiiing-box 14, a gland 15, bolts 16, and nuts 17, and in the head andabove the horizontal center thereof is an elongated opening 18, crossingthe head transversely, and secured to the head 1s an elongatedextension-or pocket 19,'having a tar-collecting chamber 2.0, havingexit-pipes 21 21 connected therewith for conducting tar from thedehydrater.

Within the receptacle is an agitator composed of a tubular shaft 22, onwhich are bands Y or collars 23, preferably shrunk on the shaft and towhich shaft and in communication with whose chamber 24 are secured`radial tubular arms 25, arranged in groups, and on the hori- Zontalmembers 26 of the arms short sections of chain 27 may be secured to moreeffectively agi-l tate the tar during the reyolution of. the agitator.The radial arms and their horizontal members are arranged in pairs andat a right angle to each other, the courses of the horizontal membersoverlapping the adjacent ends of adjoining members. To each end oftheshaft 22 is secured a right-angled4 anged ring 28, to which is secured atubular trun-nion 29'by bolts 30, extending through one of the Hanges ofthe ring 28 and through the flange 31 on the inner end of the trunnion,and the trunnion extends through the bearing 7 and the stuffing-box 8,

being provided with a steam-supply pipe 32 and a valve 33 for regulatingvthe supply of steam to the dehydrater, and on the outer end of saidtrunnion is a sprocket-wheel 34,` by which the agitator is revolved by abelt (not shown) connected with a suitable motor or source of power.

The trunnion 29 at the opposite or discharge end of the device extendsthrough the bearing 13 and the stuffing-box 14 and is provid ed with asteam-discharge pipe 35 and a valve 36, both of which are of lesscapacity than the steamsupply pipe and its valve at the opposite end ofthe device.

- Above the receptacle 1 is a water-tank 37, supported on rods 38,secured to the wall of the receptacle, and is supplied with water by asuitable pipe, (not shown,) and the water. is conductedy from the tankby pipe 39, which extends nearly to the top of the tank, as shown inFigs. 2 and 4. From the top of the receptacle 1 extend pipes 40, whichconnect with a header or pipe 41 for conducting the vapors from the tarbeing dehydrated and condensing them in the tank by surfacecondensation, the pipes 40 and the header 41 constituting the primarycondenser. To the lower side of the header 41 and near one end thereofis con nected a serpentine pipe 42 or secondary condenser of lessdiameter than the pipes 40 and header 41, which crosses the tank 37repeatedly and draws off or conducts from the primary condenser theresultant liquid or distillation and all the emanations from the coaltarevolved and liberated by the heated and agitated tar in the dehydrater,which are discharged at the opposite end ofthe tank th rough pipe 43 andcollected in a suitable receptacle for the separation of the chemicalproperties therefrom.

To the lower side of the receptacle 1 is attached a pipe 44, providedwith a valve 45 for the withdrawal of the contents of the receptacle atany time that it becomes necessary.

In the operation of dehydrating tar the receptacle 1 is supplied withtar through pipe 5, and steam is admitted to the interior of theagitator through valve' 33 and pipe 32. 'Ihe p agitator is revolved, tarheated, the water in the tar vaporized, and the vapor conducted throughthe primary and secondary condensers in the tank 37. The ammonia andother distillates of the tar carried with the water into the condensersby the vapors are arrested and4 conducted to a suitable receptacle forthe recovery of the ley-products which it contains. The tar isdischarged from the surface of the 'body in the receptacle, deprived ofwater,

ammonia, and other constituents which will volatilize at the temperatureto which the tar is subjected, and flows olf through passage 18, chamber20, and pipes 21.

The tar in the receptacle 1 is maintained at about the line indicated onFigs. 2 and 2" and the tar heated to a point or degree to vaporize thewater and the volatile distillates contained in the tar while theagitator is revolved slowly, the supply of the tar being regulated toproduce a constant overflow of the tar from the opening 18 and the pipes21. VIhe level of the tar varies slightly, according toits fluidity. Thethin tar moving more rapidly toward the discharge end of the receptaclethan thick tar causes it to rise higher; lbut under all conditions thetar flows off or is discharged at the end of the receptacle oppositethat at which it is received, and the iiow of the tar is constant whilethe apparatus is in operation.

Having thus fully described my invention, what I claim is- Atar-dehydrater consisting of a receptacle provided with a supply-pipe,an agitator having a tubular body and tubular arms, trunnions detachablyconnected to the body of the agitator and provided respectively withsteam supply and discharge pipes, a detachable head at each end of thereceptacle provided with tubular bearings and stuffing-boxes for saidtrunnions, a tar-discharge opening in one of the heads of the receptacleand in the plane ol the level of the tar, and a condenser.

In testimony whereof I aiix my signature in presence of two witnesses.

EDWIN A. MOORE.

Witnesses:

D. C. REINOHL, C. W. METCALFE.

